City of grandeur and cruelty, home of deadly swordsmen and diabolical necromancers, the brightest jewel of the vast subterranean world called the Underdark, and proudest achievement of the sinister race known as the drow, Menzoberranzan is a place with a mystery at its heart, a secret flaw that threatens to destroy it.

When the power that sustains the city is cut off at its source, enemies flood in from the darkness all around. And what greater enemy could a drow imagine than another drow?

While their whole world is changing around them, four dark elves struggle against different enemies. Yet their paths will lead them all to the most terrifying discovery in the long history of the drow and set them on a quest to save not only Menzoberranzan but the entire dark elf race from...